[TechAssist] JVC AV48WP30 Convergence problem (FIXED)
- From: "LeRoy Westlund" <llw@xxxxxxxxxx>
- To: "TechAssist" <techassist@xxxxxxxxxxxxx>
- Date: Sun, 12 Jun 2005 10:26:05 -0600
Shaun,
I did the exact same repair on a AV48WP78 just last Friday. The STK392-180
fixed my problem as well.
I unplugged the three plugs on the DVI module, just to make sure no light
hit it while working from the front access hole. It was not clear to me, if
the Eprom could be accidently erased with the power plug removed from the AC
outlet. Also, pins 1 & 2 on the DVI plug are not labeled, so I didn't dare
to short out any of them.
I think there needs to be more discussion on the dangers of the accidental
erassing of the Eprom in the DVI module , because,... with problems other
then convergence sure to come in the future, the set will sometimes need to
be run with the back cover removed.
Will removing the plugs from the DVI module, effect the operation of the TV
with the back off,...or is it a better way to short the 2 pins 1 & 2 ? And
if so,....how do you know which pins to short when they are NOT labeled ?
Count CW from the top left ?, or count CCW from the bottom right ? or what
? ). This is a very confussing issue IMO.
A secondary question: Is this a HDTV, or does it need something connected to
the DVI jack, before it can be converted to HDTV ?
Regards,
LLW
LeRoy Westlund
Westlund TV & Electronics
97 North Main " I forgot,..to remember,..
Centerfield, UT 84622-0087 to forget "
Ph./Fax 435-528-3822
mailto:LLW@xxxxxxxxxx
-----Original Message-----
From: Shaun <satguy@xxxxxxxxxxxxx>
To: techassist@xxxxxxxxxxxxx <techassist@xxxxxxxxxxxxx>
Date: Friday, June 10, 2005 7:18 PM
Subject: [TechAssist] Re: JVC AV48WP30 Convergence problem (FIXED)
>Replaced both STK392-110 with STK392-180 by removing the front panel not
the
>rear, the convergence module is right in the front and easy to remove. Did
a
>little touch up with the remote and looked perfect. Thanks for all the
input
>especially Phil for the danger on removing the back panel with the power
>plugged in.
>
>Shaun
>
>Advanced Electronics
>224 West Riverview Ave.
>Fort Morgan, CO 80701
>----- Original Message -----
>From: "Shaun" <satguy@xxxxxxxxxxxxx>
>To: <techassist@xxxxxxxxxxxxx>
>Sent: Monday, June 06, 2005 1:23 PM
>Subject: [TechAssist] Re: JVC AV48WP30 Convergence problem
>
>
>> Thanks Phil, good information to know. I ordered stk's and will go out
and
>> replace them.
>>
>> Shaun
>>
>> Advanced Electronics
>> 224 West Riverview Ave.
>> Fort Morgan, CO 80701
>> ----- Original Message -----
>> From: "Phil Bader" <tjanphyl@xxxxxxxxxxxxxxx>
>> To: <techassist@xxxxxxxxxxxxx>
>> Sent: Monday, June 06, 2005 12:48 PM
>> Subject: [TechAssist] Re: JVC AV48WP30 Convergence problem
>>
>>
>> > From my techrepairCD (www.tech-repair.net): SEE WARNING AT BOTTOM!
>> > JVC~AV48WP30 AV48WP34~Distorted picture* poor
>> > convergence~~~~Convergence/OSD PWB partially out of socket~~~~~~
>> >
>> > JVC~AV48WP30~small pic pulsating in size with no convergence
correction*
>> > collapsing vertically* black bars through pic when present.~~~16x9 HDTV
>> > ready~C931 broken leed(s)~~~~~~
>> >
>> > JVC~AV48WP30~IMPORTANT NOTICE BEFORE WORKING ON THIS SET~~~~If you
>> > remove the rear cover while the power cord is live you will destroy all
>> > DVI programming inside the DVI Digital Input Module!~The only way to
get
>> > this programming back into the unit is to send it to JVC that sends it
>> > to Japan~This module is mounted on the rear AV Jack Board and has a
>> > light sensor built in. When light is detected the module does a
complete
>> > reset and erases the EEPROM~1. Prior to disassembly* unplug the power
>> > cord from the AC outlet without fail. 2. Short the SB connector pin 1
>> > and pin 2 of the Digital Input Module.~3. Before the rear panel is
>> > inserted into the cabinet* release the short circuit on the SB
>> > connector. 4. After releasing the short circuit between the SB
>> > connector~do not turn the power on until the rear panel is inserted
into
>> > the cabinet. 5. Negligence in carrying out the above steps may cause
the
>> > inactivation of the TV~
>> > Phil Bader
>> >
>> >
>> > Philip Bader
>> > Jan Phyl TV Inc. (estab. 1976)
>> > 3420 Recker Hwy. Winter Haven, Fl. 33880
>> > Fax (863) 299-8821
>> > email: tjanphyl@xxxxxxxxxxxxxxx
>> >
>> >
>> >
>> > Shaun wrote:
>> >
>> > >Customer called me today service call is over 60 miles away, so I
>thought
>> I
>> > >would ask if there is anyone that knows the numbers of the convergence
>> ic's
>> > >or any other symptoms that cause the convergence to be off. She says
>it's
>> > >the upper left hand corner then it goes down to about the middle of
the
>> > >screen.
>> > >
>> > >Shaun
>> > >
>> > >Advanced Electronics
>> > >224 West Riverview Ave.
>> > >Fort Morgan, CO 80701
>> > >
>> >
>>
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